add or1ksim basic files

target/config/Config.in.target

@@ -37,6 +37,7 @@ config ADK_TARGET_ROOTFS_INITRAMFSPIGGYBACK
 	depends on \
 		ADK_TARGET_QEMU || \
 		ADK_TARGET_SIM || \
+		ADK_TARGET_SYSTEM_OR1K_SIM || \
 		ADK_TARGET_ARCH_AARCH64 || \
 		ADK_TARGET_ARCH_ARM || \
 		ADK_TARGET_ARCH_M68K || \

target/or1k/kernel/or1k-sim

@@ -0,0 +1,12 @@
+CONFIG_OPENRISC=y
+CONFIG_OPENRISC_BUILTIN_DTB="or1ksim"
+CONFIG_OR1K_1200=y
+CONFIG_OPENRISC_HAVE_INST_FF1=y
+CONFIG_OPENRISC_HAVE_INST_FL1=y
+CONFIG_OPENRISC_HAVE_INST_MUL=y
+CONFIG_OPENRISC_HAVE_INST_DIV=y
+CONFIG_OPENRISC_HAVE_INST_LWA_SWA=y
+CONFIG_IRQCHIP=y
+CONFIG_OR1K_PIC=y
+CONFIG_SLOB=y
+CONFIG_MICREL_PHY=y

target/or1k/systems/or1k-sim

@@ -0,0 +1,6 @@
+config ADK_TARGET_SYSTEM_OR1K_SIM
+	bool "OR1K Simulator"
+	select ADK_CPU_OR1K
+	help
+	  Simulator for OR1K architecture.
+